福厦高速铁路接地系统设计

Design for Earthing System on Fuzhou-Xiamen High-speed Railway

接地系统是电气化铁路安全运行的一项重要保障措施。鉴于目前牵引变电所接地网设计及处理形式的多样性,结合高速铁路客运专线接地设计要求,通过比较、分析不同接地方案及接地网材质的特点,得出了不同接地形式的优缺点,最终确定了接地网材质采用抗腐蚀性较好,泄流能力较强的铜材质接地网。并针对福厦线电气设施的具体情况,对各牵引变电所接触电势及跨步电势进行了计算及校验。最终确定了福厦高速铁路牵引变电所接地系统的设计方案。

Earthing system is one of the most significant security measurements for safety operation of electrified railway. In this paper, the advantages and disadvantages of different types of earthing are identified among various designs and so- lutions by comparing and analyzing different earthing solutions and materials of earthing net. Copper material with strong erosion resistance and discharge capacity is finally selected for earthing net by comparison. Contact voltage and step voltage are calculated and checked in different traction substations in Fuzhou-Xiamen railway project to determine the final design scheme of the traction substations on Fuzhou-Xiamen high-speed railway line.